Umbrella Company Margins and Fees Explained: What Contractors Actually Pay 2026/27

What an Umbrella Company Actually Does

An umbrella company employs a contractor on their behalf, invoices the recruitment agency or end client for the work done, and pays the contractor a salary through PAYE, deducting income tax and employee National Insurance as any employer would. This structure has become the default for many contractors caught inside IR35, or working through agencies that prefer not to deal with personal service companies directly.

The umbrella's margin — its own fee for running this payroll and employment relationship — is usually the most visible deduction on a contractor's statement, but it's far from the only one, and understanding the full chain from day rate to take-home pay avoids the common surprise of "why is my take-home lower than I expected."

The Full Deduction Chain

Money flows from the agency or end client to the umbrella as an "assignment rate," calculated from the contractor's agreed day rate. From that assignment rate, before anything reaches the contractor as personal pay, the umbrella must fund:

1. Employer National Insurance — 15% on earnings above the £5,000 secondary threshold, paid by the umbrella as the legal employer.
2. Apprenticeship Levy, where the umbrella's total UK payroll exceeds the relevant threshold — typically a small percentage embedded across all assignments.
3. Holiday pay — statutory paid holiday entitlement, funded from the assignment rate and either paid out regularly (rolled up) or accrued and paid when actually taken.
4. The umbrella's own margin — its fee for running payroll, typically a flat weekly amount rather than a percentage.

Only after these are accounted for does the remaining figure become the contractor's gross taxable pay, from which employee income tax and employee NI (8% up to £50,270, 2% above) are then deducted in the normal way to reach take-home pay.

Why Comparing Umbrellas by Margin Alone Is Misleading

Two umbrella companies both quoting a "£20 a week margin" can produce different take-home pay for an identical day rate, because of differences in exactly how they calculate and present the employer NI, Apprenticeship Levy and holiday pay elements, and how transparently they itemise the breakdown. Reputable umbrellas provide a clear, itemised illustration showing assignment rate down to take-home pay before you sign up; if an umbrella is reluctant to show this breakdown clearly, that itself is a warning sign.

No Employment Expenses to Offset

Unlike a self-employed sole trader or a limited company contractor claiming legitimate business expenses against profit, an umbrella company employee is, for tax purposes, a normal PAYE employee of the umbrella. This means the wide range of deductions available to genuinely self-employed people or limited company directors — home office costs, equipment, a proportion of travel not otherwise reimbursed — generally aren't available in the same way, since umbrella take-home pay is calculated as ordinary employment income after the specific reimbursed expenses policy (if any) the umbrella operates.